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Force.com Enterprise Architecture

You're reading from   Force.com Enterprise Architecture Architect and deliver packaged Force.com applications that cater to enterprise business needs

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Product type Paperback
Published in Mar 2017
Publisher Packt
ISBN-13 9781786463685
Length 504 pages
Edition 2nd Edition
Languages
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Author (1):
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Andrew Fawcett Andrew Fawcett
Author Profile Icon Andrew Fawcett
Andrew Fawcett
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Toc

Table of Contents (15) Chapters Close

Preface 1. Building, Publishing, and Supporting Your Application FREE CHAPTER 2. Leveraging Platform Features 3. Application Storage 4. Apex Execution and Separation of Concerns 5. Application Service Layer 6. Application Domain Layer 7. Application Selector Layer 8. User Interface 9. Lightning 10. Providing Integration and Extensibility 11. Asynchronous Processing and Big Data Volumes 12. Unit Testing 13. Source Control and Continuous Integration Index

Chapter 12. Unit Testing

Unit testing is a key technique used by developers to maintain a healthy and robust code base. The approach allows developers to write smaller tests that invoke more varied permutations of a given method or a unit of code. Treating each method as a distinct testable piece of code means that not only current usage of that method is safer from regression, future usage is protected as well. It frees the developer to focus on more permutations, such as error scenarios and parameter values beyond those currently in use.

Unit testing is different from integration testing where many method invocations are tested as a part of an overall business process. Both have a place on Force.com. In this chapter we will explore when to use one over the other.

To understand how to adopt unit testing we first need to understand dependency injection. This is the ability to dynamically substitute the behavior of a dependent class' s methods with test or stub behavior. Using...

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